Question

The stem of a plant is growing upward while the roots grow downward. Which of these stimuli correctly describes the response of the plant?

A. touch
B. temperature
C. gravity
D. light

Answer 1

The correct answer is **C. gravity**. This response is known as gravitropism, where the stem of the plant exhibits negative gravitropism by growing upwards against the pull of gravity, while the roots exhibit positive gravitropism by growing downwards towards gravity.